Question

For any galvanic cell to operate at standard conditions,
a) ΔG° and ΔE° are both positive
b) ΔG° and ΔE° are both negative
c) ΔG° is positive and ΔE° is negative
d) ΔG° is negative and ΔE° is positive

Answer 1

Answer:

ΔG° is negative and ΔE° is positive

Explanation:

A galvanic cell produces electrical energy from spontaneous electrochemical processes.

In a galvanic cell, ∆E° is always positive since the reaction is spontaneous at room temperature.

Generally in thermodynamics, a negative value of ∆G shows a spontaneous chemical process. Hence in a galvanic cell, ΔG° is negative and ΔE° is positive.